Occidentalis/occidentale Globally western in origin.
Odd pinnate A compound pinnate leaf with a terminal or odd numbered leaflet at the tip.
Oedema Corky portions of leaves caused by excessive humidity.
Thuja occidentalis 'Hertz Midget' (1' H x 1' W) 'Hertz Midget' is one of the smallest evergreens you will find. It grows as a tight, round ball, with the feathery Arborvitae needles.
T. occidentalis `Rheingold' -- This turns orange-yellow in the summer and a deeper orange: in winter. Shearing can keep it in good shape, and it can grow 3 feet.
Abies (Fir) ...
T. occidentalis 'DeGroot's Spire' is another favorite upright selection, growing to just eight feet tall x two feet wide at maturity. The foliage grows as twisted and spiraling fans, a unique feature.
Rudbeckia occidentalis is a particularly beautiful species growing to 2 metres with tall stems topped by large, showy, yellow blooms with the distinctive cone centre and reflex petals.
Calycanthus occidentalis, Western spicebush
Corylus cornuta var. californica, Hazelnut
Myrica californica, Wax myrtle
hysocarpus capitatus, Ninebark
Populus fremontii, Freemont cottonwood
Salix lucida ssp. lasiandra, Yellow tree willow ...
Hackberry (Celtis occidentalis) is a large shade tree, much like an elm. It matures in 50 years to a 50 to 60 foot height and spread. A long-lived tree, it is especially valuable for songbird food and cover.
Common sycamore (Platanus occidentalis) - Alligator-like texture at the base of the tree in varying shades of brown/gray; patches of white and cream/light brown/gray as you look up ...
The western spruce budworm, Choristoneura occidentalis Freeman, is a major insect pest in Colorado. Host species for spruce budworm include Douglas and white fir, blue spruce, and Englemann spruce. In September, the insect is no longer feeding.
Buttonbush (Cephalanthus occidentalis) full sun to part shade, Zone 4
White turtlehead (Chelone glabra) part shade, Zone 3
Summersweet (Clethra alnifolia) full sun to part shade, Zone 4 ...
Botanical Name: Celtis occidentalis.
Hardiness: Zones 2 to 9.
Bloom Time: Flowers in spring, produces fruit in autumn.
Size: Up to 70 high and 50 feet wide.
occidentalis, T. vulgaris and A. cucumeris, can be found in commercial orchards.
Heads may be globular or almost spherical as in Cephalanthus occidentalis (buttonbush) and Trifolium hybridum (alsike clover).
Western rock jasmine (Androsace occidentalis) is an annual plant that grows 1-4 inches in height.
Shrubs/trees: arborvitae (Thuja occidentalis); azalea (Rhododendron); balsam fir (Abies balsamea); berries; dogwood (Cornus mas); Fraser fir (Abies fraseri); fruit trees; Norway maple; redbud (Cercis canadensis); yew (Taxus).
occidentalis), which looks similar to its eastern cousin but is more drought tolerant and hardy to Zone 8. Nurseries in hot, dry regions may also stock redbuds adapted to local conditions, such as C. mexicana, C. reniformis, or C. texensis. C.
occidentalis)
Good fences make for good neighbors, but why settle for good? Growing raspberries as a living fence is a top notch way to motivate great neighborliness.
Cephalanthus occidentalis *FW
Cornus spp (tree & shrub) **FW
Corylus americana **FW
Ilex spp. *FW
Itea virginica *SF
Myrica pennsylvanica **FW
Rhus spp. **SF
Rosa spp (native) **FW
Rubus spp.***S
Sambucus canadensis***S ...
Spiderwort Tradescantia occidentalis (Spiderwort-Commelinaceae) clusters of purple flowers with 6 petals, three narrow ones in back of three wider ones, blooming at the top of a thin stem with horizontal pointed leaves below the flower cluster.
Steede suggests planting a larger, long-lived tree that grows at a moderate rate, such as a willow oak (Quercus phellos) or sugar maple (Acer saccharum), as opposed to a short-lived, fast-growing tree, such as a sycamore (Platanus occidentalis).
American arborvitae (Thuja occidentalis)
Monterey cypress (Cupressus macrocarpa)
Dwarf Alberta spruce (Picea glauca)
Feather reed grass (Calamagrostis x acutiflora)
Big bluestem (Andropogon gerardii) ...
Globose Naturally round forms add formality to walkways, beds, and edgings.
Thuja occidentalis 'Little Gem' - Eastern Arborvitae, 1-3 feet tall by 4 1/2-6 feet wide.
Thuja occidentalis 'Smaragd' - upright with bright green leaves
Cupressus macrocarpa 'Goldcrest' - conical shape with golden foliage
Tsuga canadensis 'Pendula' - mound-forming shrub with dark green leaves ...
Berberis thunbetgii (Japanese bayberry)
Elaeagnus angustifolia (Russian olive)
Junipercus communes (Common juniper)
Lonicera tatarica (Tatarian honeysuckle)
Malus baocata (Siberian crabapple)
Thuia occidentalis (American arborvitae) ...
 See also: Flower, Plant, Spring, Rose, Shrub
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